Gas-burner.



PATENTED FEB. 7, 1905. J. W. NEUMANN.

GAS BURNER.

APPLICATION FILED JUNE 17. 1904.

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No. 782,202. PATENTED FEB. '7, 1905.

J. W. NEUMANNL GAS BURNER.

APPLICATION FILED JUNE 17. 1904.

3 SHEETS-SHEET 2.

No. 782,202. I PATENTED FEB. 7, 1905. J. W. NEUMANN.

GAS BURNER.

APPLIOATION FILED JUNE 11. 1004.

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g'lllllllpi 2 No. 782,202. Patented February '7, 1905.

UNITED STATES PATENT OFFICE. if

JOHN IV. NEUMANN, OF ST. LOUIS, MISSOURI, ASSIGNOR OF PART TO CHAR-LESA. UNGER AND B. H. BENHOFF, OF ST. LOUIS, MISSOURI.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 782,202, dated February7, 1905.

' Application filed June 17, 1904. Serial No. 212,957.

T "VI/0m 7'15 Y/ I straight portions 16 and 16" of the mixing- .Be itknown that LJOHN V.NEUMANN,L citichamber. zen of the United States,residing at St. Louis, The burner-cap comprises a central body State ofMissouri, have invented certain new 18, through which a lag-screw 19 isinserted 5 5 and useful Improvements in Gas-Burners, of into thecylindrical body 1% to screw the cap which the following is aspecification containin position, a plate 20, extending outwardly ing afull, clear, and exact description, referfrom the body 18, a perforatedannular wall ence being had to the accompanyingdrawings, 21, extendingdownwardly from the outer forming a part hereof. edge of the plate 20,said wall having the gas IO hly invention relates to improvements inperforations .22, and ribs 23, extemling radigasdnn-ners; and itconsists of the novel feaally from the body 18 to the flange 21 toditures herein shown, described, and claimed. vide the space within thecap into three equal .In the drawings, Figure 1 is a vertical cenpartsforming the distributing-chambers 21, tral section on the line 1 1 ofFig. 2. Fig. 2 said chambers registering with the three mix- 5 is a topplan view as seen looking in the diing-chambers 16. Lugs 25 and 26extend uprection indicated by the arrow 2 in Fig. 1. wardl y from theupper face of the cylindrical Fig. 3 is a top plan view, partly insection body 1%, one upon each side of oneofthe ribs and parts beingomitted. Fig. 1 is a bottom 23 tohold thecapin placewiththedistrilmtingplan view of the burner-cap. Fig. 5 is a perchambers21 in registration with the mixing- 5 2O spective of the burner-jets andnozzles. Fig. chambers. The lower face 20 of the plate 6 is a viewanalogous to Fig. 1 and showing a 20 is parallel with the upper face itof the IllUt'llliCitt-iOIl. Fig. 7 is a bottom plan view mixing-chambercasting, and the gas-perforaof the burner shown in Fig. 6. Fig.8 is apertions 22 are close to said lower face 20. spective of the nozzleshown in Figs. 6 and 7. v The nozzles comprise the cap 27, bored out 5Referring to the drawings in detail, the supand adapted to be attachedto the supply-pipe porting-frame comprises the annular wall 28 by acoupling 29. cars 30, extending radi- 10, the supporting-feet 11,extending downally from the cap 27 and secured to the botwardly from thewall 10, the fiange12,extendtom of the cylindrical body 11 by screws 31,ing horizontally inwardly from the upper and the jet-arms 32, extendingradially from 3 edge of the wall 10, and the flange13,extendthe cap 27and having jets 33 discharging uping upwardly from the wall ll) outsideof the wardly into the funnel-shaped mixing-chamflange 12. hers 1c. Thejets 3?) are connected to the bore The mixing-chamber castings comprisea in the cap 27. A valve Zrt controls the supovlindrical body 14,resting upon the flange ply of gas to theburner. 'lheshutterslio are 3512 within the flange 13 and secured in posiflat plates mountedbetweentwo screws? and tion by lag-screws 15, inserted upwardly adapted toslide on the. lower face of the cylinthrough the flange 12, there beingthree indrical body H in position to regulate thedraftvertedfunnel-shaped mixing-chambers 16 in upwardly through themixingchambers. said cylindrical body, and a flange 17, ex- \Vhen thcgasisturned on, it willpass through 4 tending upwardly from saidcylindrical body. the pipe 28 to the cap 27 and then to thejets 33. I Inaddition to the inverted-funnel-shaped por- Then from the jets it willbe discharged uption 16 each mixing-chamber has the lower wardly throughthe mixing-chambers. The straight portion 16, extending downwardly,force of these streams of gas will create a and the upper straightportion 16, extenddraft, drawing air upwardly past the shutters 9 45 ingupwardly. The upper face 1etof the mix- 35, and this air will be forcedinwardly and ing-chamber casting is at right angles to the compressed bythe funnel shape of the mixing-chambers, thereby causing a good mixtureof the gas with the air. The discharge end of each jet 33 is above thelower end of the straight portion 16 of the mixing-cham- 5 her and belowthe lower end of the funnelshaped portion 16. I have found by actualpractice and years of experience that this peculiar shape and locationof a jet and mixingchamber, together with the peculiar shape andrelative location of the distributing-chamber 24 and thegas-perforations 22, produces a greatly-improved combustion over any ofthe ordinary forms of burners. The action of the gas passing from thejet 33 will start a draft of air the full size of the diameter of thestraight portion 16 of the mixing-chamber, and this volume of airpassing upwardly into the funnel-shaped portion 16 is contracted andaccelerated and forced into mixture with the gas, and this mixture ofair and gas passing through the reduced straight portion 16 strikesdirectly against the lower face 20, rebounds and passes laterally overthe upper face 14, strikes the annular wall 21, and then passes throughthe perforations 22.

In the modification shown in Figs. 6, 7, and 8 I use a singlemixing-chamber and a single jet-arm, but the same principles aremaintained.

When the burner is inoperation, the airimmediately surrounding themixing-chamber casting will be drawn upwardly by the flame, and thepressure of the cold air will force this upflowing air against the flameand con centrate the heat of the flame at a central point immediatelyabove the center of the burner, and this concentrated heat strikingthebottom of a vessel will be spread out all over the bottom and upwardlyaround the sides, thereby forming a heat-jacket protecting the vesselfrom the cold air. The gas passing upwardly through the mixing-chamberswill strike the center of the plate and be highly heated before passingthrough the openings to the flame. This plate 20 is a heavy casting welladapted to hold and convey heat, and should not be confused with theordinary thin pressed cap heretofore in use. These points effect a greatsaving in the consumption of gas and produce more perfect combustion.

I claim- 1. In a gas-burner, the mixing-chamber casting, comprisingacylindrical body, having an inverted-funnel-shaped mixing-chamber 16,and there being the straight portion 16 extending downwardly from saidfunnelshaped portion, and there being the straight portion 16, extendingupwardly from the central portion; and the upper face 14 of the castingbeing at right angles to the discharge end of the mixing-chamber; aplate; the annular wall 21 extending downwardly from the I plate, therebeing perforations 22 in said wall close to the plate, the lower face 20of said plate being parallel with the upper face 14 of.themixing-chamber casting; and the nozzle 32, having the jet 33 discharginginto the mixing-chamber, above the lower end of the straight portion16*.

2. In a gas-burner, the annular wall 10; the flange 12, extendinginwardly from the upper edge of the wall; the mixing-chamber casting,resting upon the flange 12. said casting comprising the cylindrical body14, having mixing-chambers, consisting of the inverted-funnel-shapedcentral portions 16, the lower straight portions 16 and upper straightportions 16; the upper face 14 of the casting being at right angles tothe mixing-chamber; the plate 20; the annular wall 21, extendingdownwardly from the plate and resting upon the mixing-chamber castingand having gasperforations 22 immediately below the plate, and the lowerface 20 of the plate 20 being parallel with the upper face 14 of themixing-chamber casting; the cap 27; ears 30, extending radially from thecap and secured to the mixing-chamber casting; and the jet-arms 32extending radially from the cap and having jets 33 discharging into themixing-chambers above the lower ends of the straight portions-16.

3. In a gas-burner: the mixing-chamber casting comprising, a cylindricalbody having a plurality of inverted-funnel-shaped mixingchambers 16;there being the straight portions 16 extending downwardly from saidfunnel-shaped portions; and there being the straight portions 16extending upwardly from the central portions; and the upper faces 14 ofthe casting being at right angles to the discharge ends of themixing-chambers; aplate; an annular wall extending downwardly from theplate; there being perforations in said wall close to the plate; thelower face 20 of said plate being parallel with the upper faces 14 ofthe mixing-chamber casting; radial ribs extending downwardly from theplate inside of the flange to divide the space within the flange into asmany parts as there are mixingchambers; and nozzles having jetsdischarging into the mixing-chambers; substantially as specified.

4. In a gas-burner: the mixing-chamber casting comprising, a cylindricalbody having a plurality of inverted-funnel-shaped mixingchambers; therebeing straight portions 16 extending downwardly from said funnelshapedportions; and there being straight portions 16" extending upwardly fromthe central portion; and the upper faces 14 of the casting being atright angles to the discharge ends of the mixing-chambers; a plate; acentral body extending downwardly from the plate; a perforated annularwall extending downwardly from the plate; ribs extending IIS radiallyfrom the annular wall and Clown- IntestimonywhereofIlmvesignetlmynarne\vzn'tlly from the plate to CllViClB the space into totbis'specificatlon 1n presence 0t two sub- 10 llistnbutingchamberscornmunlcatlng Wlth scriblng Witnesses.

l V (l 18 lnlmn clmlnbels, lneans 0t holellng the JOHN T NEUMANN 3cllstl'lbutlng-chambers 1n reglstratlon wlth the mixing-clmmbers; andnozzles clischarg- \V1tnesses: mg into the mixing-chambers;substantially ALFRED A. EICKS,

as specified. JOHN C. HIGDON.

